16 Celebs Who Looked Like Totally Different People On-Screen

nicole kidman the hours
Paramount Pictures; Xavier Collin/IPA/Splash News
We expect celebs to look like their amazing selves at all times -- except, of course, when we expect them to seriously change their looks in the name of art! It's sort of a TV/movie cliché, but whenever actors dramatically alter their appearance for a role, it definitely seems to increase their odds of cleaning up during awards season ... maybe that's why so many are willing to completely transform themselves!

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From celebrities who packed on (or took off) a significant number of pounds to those who donned wigs, colored contacts, and even prosthetics, the A-listers on this list proved themselves to be true chameleons!

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